Panasonic CS-E9GFEW Service Manual page 55

Diagnosis
Abnormality / Protection control
display
F91 Refrigeration cycle abnormality
F93 Outdoor compressor abnormal revolution
F95 Cool high pressure protection
F96 IPM (power transistor) overheating
protection
F97 Outdoor compressor overheating
protection
F98 Total running current protection
F99 Outdoor Direct Current (DC) peak
detection
Note:
"O" - Frequency measured and fan speed fixed.
Abnormality Emergency
Judgement operation
2 times occurrence
within 20 minutes
4 times occurance
within 20 minutes
4 times occurance
within 20 minutes
—
4 times occurance
within 10 minutes
3 times occurance
within 20 minutes
7 times occurance
continuously
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Primary location to verify
— • No refrigerant
(3-way valve is closed)
— • Compressor
— • Outdoor refrigerant circuit
— • Excess refrigerant
• Improper heat radiation
• Outdoor PCB
— • Insufficient refrigerant
• Compressor
— • Excess refrigerant
• Improper heat radiation
— • Outdoor PCB
• Compressor
Note